US7441843B2 - Hydraulic unit - Google Patents

Hydraulic unit Download PDF

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Publication number
US7441843B2
US7441843B2 US10/572,122 US57212204A US7441843B2 US 7441843 B2 US7441843 B2 US 7441843B2 US 57212204 A US57212204 A US 57212204A US 7441843 B2 US7441843 B2 US 7441843B2
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US
United States
Prior art keywords
valve
accommodating
bore
bores
noise damping
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related, expires
Application number
US10/572,122
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English (en)
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US20070040445A1 (en
Inventor
Albrecht Otto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Continental Teves AG and Co OHG
Original Assignee
Continental Teves AG and Co OHG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE102004030625A external-priority patent/DE102004030625A1/de
Application filed by Continental Teves AG and Co OHG filed Critical Continental Teves AG and Co OHG
Assigned to CONTINENTAL TEVES AG & CO., OHG reassignment CONTINENTAL TEVES AG & CO., OHG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: OTTO, ALBRECHT
Publication of US20070040445A1 publication Critical patent/US20070040445A1/en
Application granted granted Critical
Publication of US7441843B2 publication Critical patent/US7441843B2/en
Expired - Fee Related legal-status Critical Current
Adjusted expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/36—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
    • B60T8/3615—Electromagnetic valves specially adapted for anti-lock brake and traction control systems
    • B60T8/3675—Electromagnetic valves specially adapted for anti-lock brake and traction control systems integrated in modulator units
    • B60T8/368—Electromagnetic valves specially adapted for anti-lock brake and traction control systems integrated in modulator units combined with other mechanical components, e.g. pump units, master cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
    • B60T8/4068—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system the additional fluid circuit comprising means for attenuating pressure pulsations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S303/00—Fluid-pressure and analogous brake systems
    • Y10S303/10—Valve block integrating pump, valves, solenoid, accumulator

Definitions

  • the present invention relates to a hydraulic unit for a slip-controlled brake system with an accommodating member accommodating inlet and outlet valves in several valve accommodating bores of a first and a second valve row.
  • the hydraulic unit has a pump bore which is arranged outside the two valve rows in the accommodating member and is aligned transversely to the direction of the valve accommodating bores opening into the accommodating member.
  • Two low-pressure accumulator bores open into the accommodating member outside the two valve rows and vertically to the axes of the valve accommodating bores and the pump bore.
  • At least one hollow-cylinder-shaped noise damping chamber connected to the pump bore is arranged in parallel to the pump bore in a housing plane which is arranged in parallel to a housing plane that includes the valve accommodating bores.
  • the hydraulic unit also includes several pressure fluid channels connecting the valve accommodating bores, pump bores and low-pressure accumulator bores and is adapted to establish a hydraulic connection between the brake pressure generator connections that open into the accommodating member and the wheel brake connections for the transport of pressure fluid.
  • a hydraulic unit of the type mentioned above is disclosed in DE 195 42 582 A1. It is proposed in this application to arrange the noise damping chamber in parallel to the pump bore in the accommodating member and to connect the pump bore to the noise damping chamber by way of a channel, to what end the channel opens radially into the wall of the noise damping chamber. To connect the noise damping chamber to at least one of the wheel brake connections of the accommodating member, an additional channel is provided which opens radially into the peripheral surface of the noise damping chamber and leads to at least one of the wheel brake connections.
  • an object of the invention is to improve a hydraulic unit of the mentioned type using means which are as simple as possible in such a manner that the shortcoming referred to hereinabove is overcome.
  • This object is achieved for a hydraulic unit of the indicated type by providing at least one element which brings about a defined direction of inflow and outflow of the pressure fluid for the throughflow and deviation of the pressure fluid in the noise damping chamber.
  • FIG. 1 is an overall perspective view of an accommodating member for a hydraulic unit
  • FIG. 2 is a partial perspective view of the accommodating member shown in FIG. 1 in order to illustrate the invention.
  • FIG. 1 shows a perspective view of a hydraulic unit for a slip-controlled dual-circuit brake system, including a block-shaped accommodating member 1 which accommodates inlet an outlet valves in several valve accommodating bores 2 of a first and a second valve row X, Y and, beside the two valve rows X, Y, has a pump bore 3 which is aligned transversely to the direction of the valve accommodating bore 2 opening into the accommodating member 1 .
  • a motor accommodating bore 4 Arranged beside the two valve rows X, Y is also a motor accommodating bore 4 which opens vertically into a crank chamber that subdivides the pump bore 3 into two bore portions in order to accommodate two pump pistons.
  • two low-pressure accumulator bores 5 are additionally arranged in the accommodating member 1 and are directed into the accommodating member 1 beside the pump bore 3 vertically to the axes of symmetry of the valve accommodating bores 2 and vertically to the longitudinal axis of the pump bore 3 .
  • Several pressure fluid channels 2 ′, 3 ′, 5 ′ which connect the valve accommodating bores 2 , pump bores and low-pressure accumulator bores 3 , 5 establish for each one of the two brake circuits a hydraulic connection between the two brake pressure generator connections THZ and the four wheel brake connections HR, HL, VR, VL.
  • the wheel brake connections HL, HR connected to the pressure fluid channels 2 ′ by way of the valve accommodating bores 2 in the first valve row X are arranged in parallel to the motor accommodating bore 4 at the top side of the accommodating member 1 in an easy-to-mount way so that several tubes can be screwed without problems adjacent to a motor housing to be flanged to the motor accommodating bore 4 in an easily accessible fashion.
  • the second valve row Y comprises exclusively the valve accommodating bores 2 provided for the outlet valves, being positioned between the pump bore 3 and the first valve row X, which exclusively includes the valve accommodating bores 2 for the inlet valves.
  • straight pressure fluid channels 2 ′ are achieved between especially one pair or valve accommodating bores 2 having an inlet and outlet valve in the valve rows X, Y for each wheel brake.
  • return channels 5 ′ joined in pairs, an extremely simple connection between the valve accommodating bores 2 of the valve row Y and the two low-pressure accumulator bores 5 is achieved for each brake circuit.
  • the pump suction channel 3 ′ arranged between the pump bore 3 and the low-pressure accumulator bore 5 is designed to be so short and, thus, extremely space-saving that it is still possible to optimally place therein a spring-loaded non-return valve (pump suction valve) which closes in each case in the direction of the low-pressure accumulator bore 5 .
  • two hollow-cylinder-shaped noise damping chambers 6 which are configured as blind-end bores are provided beside the pump bore 3 for both brake circuits, said chambers being aligned axis parallel relative to the pump bore 3 and being connected to the pump bore 3 and the valve accommodating bores 2 of the first valve row X in the accommodating member 1 by way of special pressure fluid channels which will be described in detail in the following by way of FIG. 2 .
  • another through-opening 8 is disposed in the accommodating member 1 in a central position between the two valve rows X, Y in order to lead an electric plug that projects from the motor housing on the shortest way from the top side to the bottom side of the block-shaped accommodating member 1 , with a view to connecting the plug for electrical contacting purposes to a valve control device attached to the bottom side of the accommodating member 1 , the said valve control device additionally comprising the electronic control unit for driving the electric motor that is integrated in the motor housing.
  • FIG. 2 The invention will be described in the following by way of FIG. 2 , in which only one of the two noise damping chambers 6 is illustrated for the sake of clarity and will be explained in the following in connection with the essential features of the invention.
  • an inclined channel 10 extends from a lateral surface of the accommodating member 1 through the wall of the pump bore 3 , said inclined channel 10 opening at an acute angle in the area of the bottom of the noise damping chamber 6 .
  • an additional inclined channel 11 extends from the lateral surface of the accommodating member 1 at an acute angle through the wall of the noise damping chamber 6 , said inclined channel 11 opening in the bottom area of a valve accommodating bore 2 in the first valve row X.
  • the two inclined channels 10 , 11 represent the basic means bringing about a defined direction of inflow and outflow of the pressure fluid for a thorough throughflow and deviation of the pressure fluid in the noise damping chamber 6 . Due to the direction of inflow predefined by the inclined channel 10 , the pressure fluid supplied by the pump into the inclined channel 10 meets with the bottom of the noise damping chamber 6 , where it is set upright and deviated by 180 degrees so that the course of flow subsequently takes place opposite to the inflow within the noise damping chamber 6 in the direction of the closure member 7 that is inserted into the noise damping chamber 6 at the lateral surface of the accommodating member 1 .
  • both inclined channels 10 , 11 are configured as blind-end bores, they can be closed in a particularly simple fashion by means of the two closure members 7 inserted into the lateral surface of the accommodating member.
  • the inclined channel 10 penetrates the pump bore 3 downstream of a pump pressure valve inserted into the pump bore 3 , while the so-called additional inclined channel 11 extends through the noise damping chamber 6 in the direction of a valve accommodating bore 2 arranged in the first valve row X.
  • An orifice 9 is introduced into the noise damping chamber 6 in a comparatively simple fashion and inserted into the inclined channel 11 downstream of the noise damping chamber 6 , with a view to achieving maximum effective noise damping.
  • the inclined channel 11 ends as a short angular channel in the bottom of the valve accommodating bore 2 .
  • FIGS. 1 and 2 depict the advantages of the chosen block-type arrangement of bores in the accommodating member 1 .
  • the block-type arrangement of bores is optimized herein in such a fashion that only the pressure fluid channels 2 ′, 5 ′ provided for the valve rows X, Y are closed in a ball-type fashion, i.e. by means of appropriate sealing plugs, separately at the lateral surfaces of the accommodating member 1 .
  • the inclined channels 10 , 11 are arranged in such a favorable manner that the above-mentioned ball-type closing arrangement is omitted.
  • This is possible in a particularly simple way because the inclined channel 11 that extends from the noise damping chamber 6 to the first valve row X penetrates the peripheral surface of the noise damping chamber 6 in the direction of a valve accommodating bore 2 arranged in the first valve row X because of an inclined introduction of a drill into the noise damping chamber.
  • the drill is introduced into the pump bore 3 in such a way that it is possible to drill the inclined channel 10 through the peripheral surface of the pump bore 3 in the direction of the bottom of the noise damping chamber 6 .
US10/572,122 2003-10-10 2004-10-06 Hydraulic unit Expired - Fee Related US7441843B2 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE10347147.2 2003-10-10
DE10347147 2003-10-10
DE102004030625A DE102004030625A1 (de) 2003-10-10 2004-06-24 Hydraulikaggregat
DE102004030625.7 2004-06-24
PCT/EP2004/052453 WO2005047072A1 (de) 2003-10-10 2004-10-06 Hydraulikaggregat

Publications (2)

Publication Number Publication Date
US20070040445A1 US20070040445A1 (en) 2007-02-22
US7441843B2 true US7441843B2 (en) 2008-10-28

Family

ID=34593348

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/572,122 Expired - Fee Related US7441843B2 (en) 2003-10-10 2004-10-06 Hydraulic unit

Country Status (4)

Country Link
US (1) US7441843B2 (de)
EP (1) EP1673267B1 (de)
DE (1) DE502004005337D1 (de)
WO (1) WO2005047072A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080179942A1 (en) * 2007-01-26 2008-07-31 Mando Corporation Hydraulic unit of electronic control brake system
US20110036434A1 (en) * 2008-04-28 2011-02-17 Continental Teves Ag & Co. Ohg Hydraulic unit
US20160001754A1 (en) * 2014-07-02 2016-01-07 Mando Corporation High pressure accumulator of brake system

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008037047A1 (de) * 2008-05-15 2009-11-19 Continental Teves Ag & Co. Ohg Hydraulikaggregat
DE102009030899A1 (de) * 2009-06-29 2010-12-30 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Drucksteuerventilanordnung mit zusammen mit Querkanälen vollständig einstückig urgeformten Deckeln
US8814280B2 (en) * 2011-12-07 2014-08-26 Chung-Shan Institute of Science and Technology, Armaments, Bureau, Ministry of National Defense Proportionally controllable hydraulic brake system
DE102012209218A1 (de) * 2012-05-31 2013-12-05 Robert Bosch Gmbh Hydraulikblock für ein Hydroaggregat einer schlupfgeregelten, hydraulischen Fahrzeugbremsanlage
US9428165B1 (en) * 2015-05-14 2016-08-30 Mando Corporation Hydraulic unit of electronic control brake system

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08188137A (ja) 1995-01-09 1996-07-23 Unisia Jecs Corp アンチスキッド制御装置における液圧ポンプ構造
DE19536847A1 (de) 1995-10-02 1997-04-03 Bosch Gmbh Robert Hydraulisches Aggregat für eine schlupfgeregelte Kraftfahrzeug-Bremsanlage
DE19542582A1 (de) 1995-11-15 1997-05-22 Teves Gmbh Alfred Elektrohydraulisches Aggregat zur Druckregelung in Kraftfahrzeugbremsanlagen
DE19712211A1 (de) 1997-03-24 1998-10-01 Itt Mfg Enterprises Inc Elektrohydraulisches Aggregat zur Druckregelung in Bremsanlagen für Kraftfahrzeuge
DE19805843A1 (de) 1997-11-14 1999-05-20 Itt Mfg Enterprises Inc Hydraulikaggregat für schlupfgeregelte Bremsanlagen
WO1999025594A1 (de) 1997-11-14 1999-05-27 Continental Teves Ag & Co. Ohg Hydraulikaggregat für schlupfgeregelte bremsanlagen
WO2003064229A1 (de) 2002-01-30 2003-08-07 Continental Teves Ag & Co. Ohg Hydraulikaggregat für schlupfgeregelte bremsanlagen
DE10228424A1 (de) 2002-01-30 2003-08-14 Continental Teves Ag & Co Ohg Hydraulikaggregat für schlupfgeregelte Bremsanlagen
US20040056529A1 (en) * 2001-01-03 2004-03-25 Albrecht Otto Hydraulic unit for anti-slip brake systems
WO2004110838A1 (de) * 2003-06-14 2004-12-23 Continental Teves Ag & Co. Ohg Hydraulikaggregat
DE10355910A1 (de) 2003-06-14 2005-01-20 Continental Teves Ag & Co. Ohg Hydraulikaggregat
US20070096553A1 (en) * 2003-06-26 2007-05-03 Continental Teves Ag & Co. Ohg Hydraulic unit for slip-controlled braking systems

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001225736A (ja) * 2000-02-18 2001-08-21 Unisia Jecs Corp ブレーキ液圧制御装置

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08188137A (ja) 1995-01-09 1996-07-23 Unisia Jecs Corp アンチスキッド制御装置における液圧ポンプ構造
DE19536847A1 (de) 1995-10-02 1997-04-03 Bosch Gmbh Robert Hydraulisches Aggregat für eine schlupfgeregelte Kraftfahrzeug-Bremsanlage
WO1997012790A1 (de) 1995-10-02 1997-04-10 Robert Bosch Gmbh Hydraulisches aggregat für eine schlupfgeregelte kraftfahrzeug-b remsanlage
DE19542582A1 (de) 1995-11-15 1997-05-22 Teves Gmbh Alfred Elektrohydraulisches Aggregat zur Druckregelung in Kraftfahrzeugbremsanlagen
DE19712211A1 (de) 1997-03-24 1998-10-01 Itt Mfg Enterprises Inc Elektrohydraulisches Aggregat zur Druckregelung in Bremsanlagen für Kraftfahrzeuge
WO1999025594A1 (de) 1997-11-14 1999-05-27 Continental Teves Ag & Co. Ohg Hydraulikaggregat für schlupfgeregelte bremsanlagen
DE19805843A1 (de) 1997-11-14 1999-05-20 Itt Mfg Enterprises Inc Hydraulikaggregat für schlupfgeregelte Bremsanlagen
US20040056529A1 (en) * 2001-01-03 2004-03-25 Albrecht Otto Hydraulic unit for anti-slip brake systems
WO2003064229A1 (de) 2002-01-30 2003-08-07 Continental Teves Ag & Co. Ohg Hydraulikaggregat für schlupfgeregelte bremsanlagen
DE10228424A1 (de) 2002-01-30 2003-08-14 Continental Teves Ag & Co Ohg Hydraulikaggregat für schlupfgeregelte Bremsanlagen
US7018003B2 (en) * 2002-01-30 2006-03-28 Continental Teves Ag & Co. Ohg Hydraulic unit for slip-controlled brake systems
WO2004110838A1 (de) * 2003-06-14 2004-12-23 Continental Teves Ag & Co. Ohg Hydraulikaggregat
DE10355910A1 (de) 2003-06-14 2005-01-20 Continental Teves Ag & Co. Ohg Hydraulikaggregat
US20070096553A1 (en) * 2003-06-26 2007-05-03 Continental Teves Ag & Co. Ohg Hydraulic unit for slip-controlled braking systems

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Patent Abstracts of Japan, vol. 1996, No. 11, Nov. 29, 1996, & JP 08 188137 A (Unisia Jecs Corp), Jul. 23, 1996.
Patent Abstracts of Japan, vol. 2000, No. 25, Apr. 12, 2001, & JP 2001 2257736 A (Unisia Jecs Corp), Aug. 21, 2001.

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080179942A1 (en) * 2007-01-26 2008-07-31 Mando Corporation Hydraulic unit of electronic control brake system
US7967394B2 (en) * 2007-01-26 2011-06-28 Mando Corporation Hydraulic unit of electronic control brake system
US20110036434A1 (en) * 2008-04-28 2011-02-17 Continental Teves Ag & Co. Ohg Hydraulic unit
US8702182B2 (en) * 2008-04-28 2014-04-22 Continental Teves Ag & Co. Ohg Hydraulic unit
US20160001754A1 (en) * 2014-07-02 2016-01-07 Mando Corporation High pressure accumulator of brake system
US9522660B2 (en) * 2014-07-02 2016-12-20 Mando Corporation High pressure accumulator of brake system

Also Published As

Publication number Publication date
EP1673267A1 (de) 2006-06-28
DE502004005337D1 (de) 2007-12-06
WO2005047072A1 (de) 2005-05-26
US20070040445A1 (en) 2007-02-22
EP1673267B1 (de) 2007-10-24

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